Roll and core correcting device and method



Nov. 24, 1970 J. A. FERRIS, SR

ROLL AND CORE'CORRECTING DEVICE AND METHOD 2 Sheets-Sheet l Filed June 5 INVENTOR. James A). Herr/'5, 5/:

Nov. 24, 1970 J. A. FERRIS, SR

ROLL AND CORE CORRECTING DEVICE AND METHOD ZSheets-Sheet 2 Filed June 5, 1968 INVENTOR James A. Err/'5, 5

United States Patent 01 ice 3,541,665 ROLL AND CORE CORRECTING DEVICE AND METHOD James A. Ferris, Sin, 712 Reid St., West De Pere, Wis. 54178 Filed June 5, 1968, Ser. No. 735,503 Int. Cl. 822d 19/10 US. Cl. 29-401 6 Claims ABSTRACT OF THE DISCLOSURE This disclosure relates to a method and a device for repairing and plugging a damaged core about which materials are rolled or coiled. The method is performed in a straight-through, non-reversing operation consisting of removably fastening a core plug to a core-correcting die, urging the die and plug throughout the length of the damaged core, plugging the entry end of the core with a second plug, and unfastening the first plug from the die. The device comprises means for performing the above method.

Whatever materials of any typepaper, plastics, metal or any otherare wound or coiled, great loss is suffered due to the damaging, as by crushing of the cores upon which the materials are wound, and by the telescoping of the materials themselves. It is to be kept in mind that the cores must be near-perfect in roundness so as to permit of the mounting of the rolls in the end-processing machines; and, the two edges of the roll must be true, not telescoped, as by the shifting to either side of any number of laps of the material. Entire shipments of rolls worth many thousands of dollars have been known to be scrapped, particularly for core damage. A heavy roll of a ship, a severe humping of a railroad car can crush every core in a shipment of rolls. Other transit and inplant handling are also cause of much other damage.

Present devices for the correction of such damaged cores and rolls are cumbersome and wasteful of labor in their requiring so much of manipulation; besides which,

their application is so limited as yet to leave the more.

badly damaged rolls for scrapping. In other cases, cores are laboriously corrected but then spring back to their damaged condition immediately upon emergence of the correcting tool from the core-a complete waste of labor, the roll, after all, scrapped.

Other devices are available for the specialized work of correcting telescoped rolls and coils but these devices are limited to just that special purpose.

In my invention, I have combined in one device, simple of construction and of operation, means and methods for the correcting of all cores, for preventing their return to the damaged condition, and for the correcting of telescoped rolls or coils of materials.

Specifically, this invention is a device for the correcting of paper, metal and other roll or coil products which have been damaged as by the crushing of their cores or the telescoping of the materials.

One object of the invention is to provide a compact, portable and inexpensive device which can be brought to the Work, so to save the laborious and costly re-handling of the cumbersome rolls to any central correcting station.

Another object of the invention is to provide a device and method for the plugging of corrected cores hard upon the passage of a correcting die through the core so as to prevent the return of the core to the original, damaged condition.

Another object of the invention is to provide a device for the correcting of telescoped rolls and coils of materials.

Other objects and advantages of the invention will be more apparent from the following description wherein reference is had to the accompanying drawings, in which:

FIG. 1 is an elevational view of the device correcting a telescoped roll of material.

FIG. 2 is an end view of the device.

FIG. 3 is a view showing the device in its starting position for the correcton of such cores as do not require plugging before emergence of the correcting die from the core.

FIG. 4 is a view showing the same roll with its startend corrected and plugged.

FIG. 5 is an end view of a typical, crushed core.

FIG. 6 is a view showing the starting position of the device being used for the correction of such cores as require plugging before emergence of the correcting die from the core.

FIG. 7 is a view of the same roll as in FIG. 6, now with its core partially corrected and with its start-end plugged.

FIG. 8 is a view of the same roll as in FIGS. 6 and 7, now with its core fully corrected, the correcting die emerged, and the core retainer rods and nuts being removed, both ends of the core plugged.

FIG. 9 is a perspective view of the specially drilled plug such as required in such cores as require plugging in the method shown in FIGS. 6, 7 and 8.

FIG. 10 is a plan View of an alternate form of power two ordinary hydraulic cylinders yoked together.

FIG. 11 is an end view of FIG. 10.

FIG. 12 is a perspective view of the body of the device.

FIG. 13 is an alternate form of die-puller, a cable and cable clamp.

In the preferred embodiment, the device consists of a standard 10, a body 11, a hollow ram 12, a die-puller rod 13, takeup wheel 14, buckup plate 15 and adaptable fittings as correcting dies 16 and 17, and telecsope-correcting plates 18 and 18.

In simplest operation, FIGS. 3 and 4, a suitably-sized correcting die is screwed to one end of die-puller rod 13 and is pulled through the damaged core 21, so expanding the same to a corrected, round, shape; whereafter, wooden plugs 34 are fitted within each end of the core, so to retain its corrected shape until the time of end-use.

Great power is required for the pulling of the correcting die 16 though the length of the damaged core 21. For this power, the hollow hydraulic ram 12 is employed. Any suitable hydraulic pump, manual or power, provides pressure at P, causing the ram piston 12' of ram 12. to impinge upon and to urge the takeup wheel 14, die-puller rod 13 and correcting die 16 a distance equal to one full stroke of ram piston 12, see dotted lines, FIG. 6. Pressure is then reversed, ram piston 12' returns to bottom, takeup wheel 14 is manually screwed back to impinge upon retracted piston 12'. A second, similar advance and takeup is made, and so on until die 16 has been pulled completely through core 21. Plugs are then fitted to each end, the cores, usually, being rigid enough as to retain the corrected shape, after emergence of the correcting die 16, until the operator plugs the ends.

But, not always are the cores, once-damaged, rigid enough as to retain corrected shape when any correcting tool or die is removed from the core.

For such diflicult cores, heretofore uncorrectible, I provide a method and means for the plugging of each Patented Nov. 24, 1970 3 end of the core hard upon the :passage of the correcting die 17, so plugging both ends of the core before the emergence of the die from the core.

Thus, reference had to FIG. 6: Roll has its core 21 deformed at both ends; the device is in starting position for work. Two plugs22 being the entry-end plug, 23 the exit-end plugare slipped upon core-retainer rods 24; the rods 24 are then screwed into cooperating tapped holes 25 in die 17, nuts 26 are pulled up to tighten exit-end plug 23 to correcting die 17; exit-end plug 23 may have its leading end slightly tapered as at 27 to facilitate its passage through the core 21. Power is applied as described before, until correcting die 17 has advanced to the position shown in FIG. 7. At this stage, the entry end of the core 21 has been corrected and is being retained in this corrected condition by exit-end plug 23 and correcting die 17, permitting the operator now to tap entry-end core 22 into place as shown. Correcting die 17 and attached exit-end plug 23 are then further advanced until die 17 just emerges from core 21, exit-end plug then having arrived at exactly its own seating area. Core-retainer rods 24 are now unscrewed from die 17, nuts 26 are unscrewed from rods 24 and are retrieved through center holes 28 of plug 22.

Especially when cores are badly collapsed the force and friction of pulling the die 17 through the core 21 would, unless prevented, pull the core 21 and some of its surrounding material into a telescope, ruining the roll. To prevent this result, a buckup plate 15 is provided, with a center hole 15' just large enough to permit passage of the correcting die 17 therethrough, whilst bucking the core 21 and the roll material against moving. Buckup plate 15 is provided with mounting holes 29, threaded and so spaced as to register with drilled holes 30 in mounting pads 3131 of body 11 and is fastened thereto by means of cap screws 3232 for quick interchangeability since each size of core 21 and corresponding size of correcting die 17 requires a corresponding size of center hole 15 in the buckup plate 15.

In setting up for work, correcting dies 16 or 17 are first screwed to one end of die-puller rod 13, then the latter is thrust through the core 21 and so to the power unit, the ram 12. To facilitate the work of thrusting through flattened cores, the power end of die-puller rod 13 may be sharpened to a point or wedge shape as at 13.

For the correcting of telescoped rolls or coils of material, FIG. 1, a stationary disc 18 is attached to body 11, availing of holes 3030 in the mounting pads 31-31 and cap screws 3232. A center hole 33 in disc 18 provides ample clearance for the passing therethrough of die-puller rod 13. A movable disc 18 is screwed to die-puller rod 13. Operation of the ram, as described before, pulls disc 18 to position 18", shown in dotted lines, so correcting the telescoped condition.

While in the foregoing specification I have shown specific structures in considerable detail, it will be understood that such details of structure may be varied widely 4 by those skilled in the art without departing from the spirit of my invention.

I claim:

1. A method of repairing, correcting and plugging a damaged core about which materials are rolled or coiled, said method being performed in a straight-through, nonreversing operation comprising: providing a core-correcting die, an entry-end core plug and an exit-end core plug, said die and plugs having an appropriate outside diameter; removably fastening said exit-end plug to said die; urging said die and said exit-end plug throughout the length of said damaged core; plugging the entry end of said damaged core with said entry-end plug while said die and said exit-end plug are within said damaged core and just past the seating area of said entry-end plug; and unfastening said exit-end plug from said die when said die has just emerged from said damaged core and said exit-end plug has just arrived at its seating area.

2. A device for repairing and plugging a damaged core about which materials are wound or coiled, said device comprising: a core-correcting die; means for removably fastening an exit-end core plug to said die; means for urging said die and said exit-end plug through said dam aged core; and a buckup plate to prevent movement of and the telescoping of the wound materials; and means for inserting an entry-end plug into the entry end of said damaged core.

3. The device of claim 2 wherein said means for removably fastening consists of core retainer rods and nuts which are adapted to unfasten said exit-end plug upon its arrival at its proper seating area from said die by manipulation from without said damaged core; said means for urging includes a takeup wheel and a co-operating die puller rod; and said buckup plate has an opening therethrough centralized with and slightly larger in diameter than the diameter of said die.

4. The device of claim 3 wherein said means for urging includes a hollow hydraulic ram.

5. The device of claim 3 wherein said means for urging includes a yoked pair of hydraulic cylinders.

6. The device of claim 2 wherein said means for urging includes a cable and a cable clamp.

References Cited UNITED STATES PATENTS 1,970,263 8/1934 Washburn 24268.6 2,117,722 5/1938 Huggins 29-401 X 3,133,342 5/1964 Ridings 29259 3,233,728 2/1966 Johnson et al 24268.6 X

JOHN F. CAMPBELL, Primary Examiner D. C. REILEY, Assistant Examiner US. Cl. X.R. 

